Real-time air monitoring and alerting plays a major role in protecting citizens with health issues. Since nowadays the air pollution measurements provided are measured by stationary monitoring sites and the measurements are delayed, there is a necessity for a portable device which can sense air pollution levels while alerting the user in real time. This report presents the process followed to create a prototype for a portable air monitoring device. The prototype is designed to incorporate a Pycom LoPy microcontroller, Pytrack board, a COZIR CO2 sensor, a SPEC NO2 sensor and a 3.3 V LiPo battery. The device logs carbon dioxide and nitrogen dioxide levels and GPS location and sends this data through LoRaWAN to a LoRa gateway in real-time. This information could then be sent to a web server and presented to users through a website and displayed on a global map. The device also features an embedded RGB LED with different colours which would alert the user about air pollution levels in real time. The brand name of the product is BreatheON.

Treball desenvolupat en el marc del programa "European Project Semester".

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